TY - JOUR AU - H.W. Alt TI - Numerical Solution of Steady-State Porous Flow Free Boundary Problems. JO - Numerische Mathematik PY - 1980 SP - 73 EP - 98 VL - 36 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1980__36_132691/ ID - NUMA_1980__36_132691 ER -